Cita APA (7a ed.)

Oppenheim, J., & Reid, B. (1986). Have you seen birds? North Winds Press.

Cita Chicago Style (17a ed.)

Oppenheim, Joanne, y Barbara Reid. Have You Seen Birds? Richmond Hill, Ontario: North Winds Press, 1986.

Cita MLA (9a ed.)

Oppenheim, Joanne, y Barbara Reid. Have You Seen Birds? North Winds Press, 1986.